Move cache consistency validation into Analysis Server.

pkg/analyzer/test/generated/engine_test.dart

Index: pkg/analyzer/test/generated/engine_test.dart
diff --git a/pkg/analyzer/test/generated/engine_test.dart b/pkg/analyzer/test/generated/engine_test.dart
index b515137bcfd35afba97784d753fa334321eb9f07..37d94266c7a653a51fb8ee7b502bdc911e1d99e1 100644
--- a/pkg/analyzer/test/generated/engine_test.dart
+++ b/pkg/analyzer/test/generated/engine_test.dart
@@ -5814,6 +5814,12 @@ class TestAnalysisContext implements InternalAnalysisContext {
   }
 
   @override
+  bool validateCacheConsistency() {
+    fail("Unexpected invocation of validateCacheConsistency");
+    return false;
+  }
+
+  @override
   void visitCacheItems(void callback(Source source, SourceEntry dartEntry,
       DataDescriptor rowDesc, CacheState state)) {
     fail("Unexpected invocation of visitCacheItems");